1
What do you notice?
What do you notice?
1
What do you wonder?
What do you wonder?
Grade 3 Unit 1
Lesson 20: The Commutative Property
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 1
Lesson 20: The Commutative Property
CC BY 2021 Illustrative Mathematics®
Summarize what you learned about multiplication today.
Find the value of each expression mentally.
70 - 10
68 - 10
70 - 12
68 - 12
What do you notice?
What do you wonder?
How are the situations the same?
How are the situations the different?
Write an equation for Image A.
Write an equation for Image B.
Write 2 multiplication equations that represent the array.
Explain why both equations can represent the array.
How does your equation connect to the situation and array for Image A?
How does your equation connect to the situation and array for Image B?
